siddharthteotia commented on code in PR #10120:
URL: https://github.com/apache/pinot/pull/10120#discussion_r1073784131
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pinot-query-runtime/src/test/resources/queries/Skew.json:
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@@ -0,0 +1,79 @@
+{
+ "skew": {
+ "tables": {
+ "tbl": {
+ "schema": [
+ {"name": "groupingCol", "type": "STRING"},
+ {"name": "partitionCol", "type": "STRING"},
+ {"name": "val", "type": "INT"}
+ ],
+ "inputs": [
+ ["a", "key1", 1],
+ ["a", "key2", 2],
+ ["a", "key3", 3],
+ ["a", "key1", 4],
+ ["a", "key2", 4],
+ ["a", "key3", 4],
+ ["a", "key1", 7],
+ ["a", "key2", 9],
+ ["b", "key3", 1],
+ ["b", "key1", 2],
+ ["b", "key2", 3],
+ ["b", "key3", 4],
+ ["b", "key1", 4],
+ ["b", "key2", 4],
+ ["b", "key3", 7],
+ ["b", "key1", 9]
+ ],
+ "partitionColumns": [
+ "partitionCol"
+ ]
+ },
+ "tbl2": {
+ "schema": [
+ {"name": "groupingCol", "type": "STRING"},
+ {"name": "partitionCol", "type": "STRING"},
+ {"name": "val", "type": "INT"}
+ ],
+ "inputs": [
+ ["a", "key1", 1],
+ ["a", "key2", 2],
+ ["a", "key3", 3],
+ ["a", "key1", 4],
+ ["a", "key2", 4],
+ ["a", "key3", 4],
+ ["a", "key1", 7],
+ ["a", "key2", 9],
+ ["b", "key3", 1],
+ ["b", "key1", 2],
+ ["b", "key2", 3],
+ ["b", "key3", 4],
+ ["b", "key1", 4],
+ ["b", "key2", 4],
+ ["b", "key3", 7],
+ ["b", "key1", 9]
+ ],
+ "partitionColumns": [
+ "partitionCol"
+ ]
+ }
+ },
+ "queries": [
+ {
+ "description": "skew for int column",
+ "sql": "SELECT groupingCol, SKEWNESS(val), KURTOSIS(val) FROM {tbl}
GROUP BY groupingCol",
Review Comment:
you may want to add a simple pure aggregation-only (without GROUP BY) SQL as
well for both `skewness` and `kurtosis`
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